[VallabhiGoyal]

Fix mentorship completion notes persistence

Problem

Completion notes provided when completing a mentorship match were not being persisted.

Changes

• Added completionNotes to the MentorshipMatch entity.
• Added a Flyway migration to introduce the completion_notes column.
• Updated PostgreSQL repository SQL to save and retrieve completion notes.
• Updated mentorship service methods to preserve completion notes during match updates.
• Added repository and service unit tests.

Testing

• Repository tests passed.
• Full Gradle test suite passed using Java 21.

Verification note

Database migration has not yet been independently tested against a live PostgreSQL instance.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud